Why don't governments pursue policies to educate parents about protecting their children's eye health?

Nowadays, everyone complains about the increasing number of refractive error cases, but no steps are taken to reduce these cases. If parents ensure that their children spend at least 2 hours outside a day and keep close activities such as playing computer or reading books to a minimum until the age of 10-12, these cases are likely to decrease.

Why don't governments pursue policies to educate parents about protecting their children's eye health?
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